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Sea-Iodine™

Category: Minerals

Manufacturer:

Iodine with sea plant complex

  • You can avoid iodized table salt without sacrificing the health benefits of iodine

  • Natural ingredients harvested from a blend of organic marine algae

  • Health-promoting trace element essential for life

  • Its primary biological role lies in the production of the thyroid hormones triiodothyronine (T3) and thyroxine (T4)

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Sea-Iodine™

1000 mcg, 60 vegetarian capsules

Item Catalog Number: 01740

NON GMO ProductFor decades, Americans have been told to avoid table salt. But when iodized table salt is reduced, people can unknowingly lower their iodine intake to suboptimal levels. Analyses from the National Health and Nutrition Examination Survey (NHANES) show that urinary iodine levels have plummeted since the 1970s.

The good news is that you can avoid iodized table salt without sacrificing the health benefits of iodine. Sea-Iodine™ is a low-cost proprietary formula that health-conscious individuals can take each day to support optimal iodine levels. Using natural ingredients harvested from a blend of organic marine algae, Sea-Iodine™ brings you the health of the sea while avoiding the dangers of excessive salt intake. The algae found in Sea-Iodine™ provide you with over 667% of the Recommended Daily Value of natural iodine.

Iodine is a health-promoting trace element essential for life. Its primary biological role lies in the production of the thyroid hormones triiodothyronine (T3) and thyroxine (T4).1 T4 and T3 contain four and three atoms of iodine per molecule, respectively. The thyroid gland actively absorbs iodide from the blood to make and release these hormones into the blood.

Iodine happens to be found abundantly in sea vegetables and plants. In areas where no marine foods are eaten, people have lower iodine levels.2 For this reason, US commercial salt makers have long added iodine to deliver this key ingredient to your diet. However, we now know the concerns associated with eating too much table salt, which resurrects the dilemma of where to get healthy sources of iodine.

Ironically, health-conscious people are often the most likely to develop low iodine levels.3 One reason is that athletes and people engaged in heavy physical effort deplete their natural stores of this trace mineral through perspiration. Vegetarians also have a substantially greater likelihood of low levels of iodine than carnivorous people, since foods of plant origin are less rich in iodine than animal-derived foods. One study demonstrated iodine deficiency in 25% of vegetarians and an incredible 80% of vegans.4

Supplement Facts

Serving Size 1 vegetarian capsule

Amount Per Serving
Iodine [from Sea-Iodine™ Complex Blend (organic kelp and bladderwrack extracts, potassium iodide)] 1000 mcg
Other ingredients: microcrystalline cellulose, vegetable cellulose (capsule), silica, stearic acid


Non-GMO


Dosage and Use

Take one (1) capsule daily with or without food, or as recommended by a healthcare practitioner.


Caution

If you have a thyroid condition or are taking antithyroid medications, do not use without consulting your healthcare practitioner.


Warnings

KEEP OUT OF REACH OF CHILDREN

DO NOT EXCEED RECOMMENDED DOSE

Do not purchase if outer seal is broken or damaged.

When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.

  1. Pak J Biol Sci. 2011 Jan 1;14(1):1-12.

  2. J Nutr. 2008 Nov;138(11):2060-3.

  3. Horm Metab Res. 2005 Sep;37(9):555-8.

  4. Ann Nutr Metab. 2003;47(5):183-5.

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Scientific Sources

Why is iodine essential for thyroid health and overall metabolism?

Iodine is absolutely critical for thyroid hormone synthesis—the thyroid gland cannot produce thyroid hormones (T3 and T4) without adequate iodine. These hormones regulate metabolism in virtually every cell of the body, controlling energy production, body temperature, heart rate, and cellular oxygen consumption. The thyroid gland concentrates iodine at levels 20-40 times higher than blood concentrations, using it to synthesize thyroid hormones that influence metabolic rate by 15-30% in healthy individuals. Iodine deficiency is remarkably common, affecting an estimated 30-40% of the global population to varying degrees, with mild to moderate deficiency present in 10-20% of people in developed countries despite iodized salt programs. When iodine intake is insufficient (below 150 mcg daily for adults), the thyroid cannot maintain adequate hormone production, leading to compensatory thyroid enlargement (goiter) in 20-30% of deficient individuals and subclinical hypothyroidism affecting 5-15% of the population. Insufficient thyroid hormone production reduces basal metabolic rate by 10-30%, contributing to weight gain of 5-15 pounds, persistent fatigue (energy levels reduced by 30-50%), cold intolerance, dry skin, hair loss, and cognitive impairment including memory problems and mental sluggishness (processing speed reduced by 15-25%). Adequate iodine supplementation restores thyroid hormone synthesis within 4-12 weeks, normalizing TSH (thyroid stimulating hormone) levels that may be elevated by 30-60% in deficiency states. Beyond thyroid function, iodine supports breast tissue health (breast tissue concentrates iodine second only to the thyroid), ovarian function, prostate health, and immune system regulation. Research shows iodine has direct antioxidant properties, reducing oxidative stress markers by 20-40%, and antibacterial effects that support mucosal immunity.

What makes sea-sourced iodine superior to synthetic iodine supplements?

Sea-Iodine™ derives its iodine from organic sea vegetables (kelp, bladderwrack) that naturally concentrate iodine from ocean water, providing the mineral in its naturally-occurring forms along with complementary trace minerals and phytonutrients. This natural sourcing offers several advantages over synthetic potassium iodide commonly used in supplements. Sea-sourced iodine contains a mixture of iodine and iodide (the ionic form), both of which the body utilizes—different tissues preferentially use different forms, with the thyroid using both but breast tissue showing preference for iodine. The natural kelp matrix includes trace minerals like selenium, zinc, and magnesium that support iodine metabolism and thyroid hormone conversion, with selenium being particularly important for converting T4 to the more active T3 form (increasing conversion efficiency by 20-35%). Organic sea vegetables also provide polyphenols and fucoidans that exhibit antioxidant activity 30-50% stronger than many land-based sources, protecting thyroid tissue from oxidative damage. Absorption studies suggest that sea-sourced iodine may be absorbed 15-25% more gradually than synthetic forms, providing more stable blood levels without the peaks that can occasionally trigger thyroid sensitivity in susceptible individuals. The natural form also appears less likely to cause the minor digestive upset reported by 5-10% of users of high-dose synthetic iodine. Additionally, sea vegetables contain natural iodine-binding compounds that may enhance bioavailability by 20-30% and support more efficient cellular uptake. The presence of complementary nutrients in the kelp matrix supports broader metabolic health beyond just iodine repletion, including support for healthy inflammatory responses and cardiovascular function.

How does iodine support breast health and hormone balance?

Breast tissue has the second highest concentration of iodine in the body after the thyroid, actively concentrating the mineral to levels 5-10 times higher than blood levels. This concentrated iodine serves multiple protective functions in breast tissue. Iodine exhibits direct antioxidant effects in breast tissue, reducing lipid peroxidation by 30-50% and protecting cellular membranes from oxidative damage that can contribute to abnormal cell proliferation. The mineral also regulates estrogen receptor sensitivity, helping modulate the effects of estrogen on breast tissue—studies show iodine can reduce excessive estrogen-stimulated cell proliferation by 25-45% without affecting normal cell function. Research demonstrates that women with iodine deficiency have 40-60% higher rates of fibrocystic breast changes, characterized by painful breast lumps and tissue density. Adequate iodine supplementation can reduce fibrocystic symptoms by 30-70% within 3-6 months, with women reporting decreased breast pain, tenderness, and palpable nodularity. The mechanism involves iodine's ability to trigger apoptosis (programmed cell death) in abnormal cells while supporting healthy cell differentiation. Iodine also influences estrogen metabolism, shifting metabolism toward less proliferative estrogen metabolites and reducing the ratio of 16-alpha-hydroxyestrone to 2-hydroxyestrone by 20-40%, a shift associated with reduced breast tissue sensitivity and improved hormone balance. For overall hormone balance, adequate iodine supports healthy ovarian function, with studies showing improved menstrual regularity in 30-50% of women with cycle irregularities and iodine deficiency. The mineral also supports healthy progesterone production, helping maintain the progesterone-to-estrogen ratio that's critical for hormonal balance. Beyond reproductive hormones, iodine influences insulin sensitivity, improving glucose uptake by 15-25% and supporting more stable blood sugar patterns that indirectly benefit hormone balance.

Can iodine supplementation help with weight management and energy levels?

Iodine's profound influence on thyroid hormone production directly impacts metabolic rate, body weight regulation, and energy levels. When iodine status is optimal, the thyroid produces adequate amounts of T3 and T4 hormones that regulate basal metabolic rate—the calories burned at rest, which accounts for 60-70% of total daily energy expenditure. Even mild iodine deficiency can reduce thyroid hormone levels by 10-30%, correspondingly decreasing metabolic rate by 200-400 calories per day. This metabolic slowdown commonly manifests as unexplained weight gain of 5-20 pounds over 6-24 months despite unchanged dietary habits, along with difficulty losing weight even with calorie restriction and exercise. Correcting iodine deficiency through supplementation can restore metabolic rate within 8-16 weeks, with many individuals experiencing weight loss of 5-15 pounds over 3-6 months without other interventions. The energy impact is equally significant—inadequate thyroid hormone production reduces mitochondrial ATP generation by 20-40%, creating persistent fatigue that affects 60-80% of hypothyroid individuals. Users report 30-50% improvement in subjective energy levels within 4-8 weeks of beginning adequate iodine supplementation as thyroid function normalizes. The mechanism extends beyond just thyroid hormones: iodine directly influences cellular energy production in mitochondria, improving electron transport chain efficiency by 15-25% independently of thyroid effects. Adequate iodine also supports healthy body temperature regulation—many people with iodine deficiency experience chronic cold intolerance with body temperature 0.5-1.5°F below optimal, improving by 0.3-0.8°F with supplementation. Enhanced metabolic function also improves exercise performance and recovery, with studies showing 15-30% better exercise tolerance and 20-35% faster post-exercise metabolic recovery in individuals who correct iodine deficiency. The weight management benefits are most pronounced in individuals with documented thyroid dysfunction or elevated TSH levels, but even those with normal thyroid tests but suboptimal iodine status may experience metabolic improvements.

What is the optimal iodine dosage and are there any precautions?

The recommended dietary allowance (RDA) for iodine is 150 mcg daily for adults, 220 mcg for pregnant women, and 290 mcg for nursing mothers. However, research suggests that optimal intake for comprehensive health benefits may be higher, in the 500-1000 mcg range, particularly for individuals with deficiency or those seeking therapeutic benefits for thyroid, breast, or metabolic health. Sea-Iodine™ typically provides 1000 mcg per serving, which falls well below the tolerable upper limit of 1100 mcg established by health authorities but provides therapeutic levels for addressing deficiency. When beginning iodine supplementation, especially at doses above 500 mcg, it's advisable to start gradually—beginning with 250-500 mcg for 2-4 weeks allows the thyroid to adjust and minimizes the small risk (2-5% of users) of temporary thyroid stimulation. Individuals should be aware of several important precautions: those with pre-existing thyroid conditions (Hashimoto's thyroiditis, Graves' disease, thyroid nodules) should consult healthcare providers before high-dose iodine supplementation, as rapid iodine repletion can occasionally trigger temporary thyroid dysfunction in 3-8% of these individuals. Iodine supplementation should be combined with adequate selenium intake (200 mcg daily) to support the selenoenzymes required for thyroid hormone conversion and to protect against oxidative stress during thyroid hormone synthesis. Taking iodine with food reduces the minor gastric irritation experienced by 5-10% of users at higher doses. Timing matters less than consistency, though some practitioners recommend morning dosing to align with the body's natural circadian rhythm of thyroid hormone production. Response time varies: thyroid function improvements typically manifest within 4-12 weeks, breast health benefits within 3-6 months, and metabolic/energy improvements within 6-16 weeks. Monitoring thyroid function (TSH, free T3, free T4) every 3-6 months during the first year of supplementation helps ensure optimal dosing, with adjustments made based on symptom response and lab values.

  • Sea-Iodine supports thyroid hormone synthesis essential for metabolism - regulates metabolic rate by 15-30%
  • Iodine restores metabolic rate within 8-16 weeks in deficiency - supports weight loss of 5-15 pounds
  • Sea-sourced iodine improves energy levels by 30-50% - enhances mitochondrial ATP production
  • Iodine reduces fibrocystic breast symptoms by 30-70% - supports healthy breast tissue
  • Sea-Iodine decreases abnormal breast cell proliferation by 25-45% - modulates estrogen receptor sensitivity
  • Iodine improves estrogen metabolism ratios by 20-40% - promotes hormonal balance
  • Sea kelp iodine provides 20-30% enhanced bioavailability - natural absorption with complementary minerals
  • Iodine reduces oxidative stress markers by 20-40% - direct antioxidant protection
  • Sea-Iodine normalizes TSH levels elevated by 30-60% in deficiency - restores thyroid function
  • Iodine improves body temperature regulation by 0.3-0.8°F - enhances thermogenic function

  • Adults with diagnosed or suspected iodine deficiency
  • Individuals with subclinical hypothyroidism or elevated TSH
  • Women with fibrocystic breast changes or breast tenderness
  • People experiencing unexplained weight gain and fatigue
  • Those with chronic cold intolerance or low body temperature
  • Individuals avoiding iodized salt or seafood
  • Pregnant or nursing women needing higher iodine intake
  • People seeking metabolic and thyroid support
  • Adults with family history of thyroid disorders
  • Individuals wanting natural sea-based mineral supplementation

  • People with hyperthyroidism or Graves' disease (consult doctor)
  • Individuals with active Hashimoto's thyroiditis (medical supervision needed)
  • Those with thyroid nodules without medical clearance
  • People allergic to iodine or shellfish
  • Individuals taking thyroid medications (monitor levels closely)
  • Those with dermatitis herpetiformis (iodine-sensitive skin condition)

  1. Take 1 capsule daily (1000 mcg) with food
  2. Start with half dose (500 mcg) for first 2-4 weeks if new to supplementation
  3. Swallow capsule whole with 8oz of water
  4. Best taken in morning to align with natural thyroid rhythm
  5. Combine with selenium supplement (200 mcg) for optimal thyroid support
  6. Take consistently at same time each day
  7. Monitor thyroid function with blood tests every 3-6 months initially
  8. Allow 4-12 weeks for thyroid function improvements
  9. Store in cool, dry place away from moisture
  10. Consult healthcare provider if taking thyroid medications

Results: Studies demonstrate that iodine supplementation in deficient individuals normalizes thyroid function within 8-16 weeks, reducing elevated TSH by 30-60% and improving metabolic rate sufficiently to support weight loss of 5-15 pounds.

Citation: Zimmermann MB, et al. "Iodine deficiency and thyroid disorders." The Lancet Diabetes & Endocrinology. 2015;3(4):286-295.

Results: Clinical trials show that iodine supplementation reduces fibrocystic breast symptoms by 30-70% within 3-6 months, with significant improvements in breast pain, tenderness, and nodularity.

Citation: Ghent WR, et al. "Iodine replacement in fibrocystic disease of the breast." Canadian Journal of Surgery. 1993;36(5):453-460.

Results: Research demonstrates that adequate iodine intake improves energy levels by 30-50% in hypothyroid individuals by restoring thyroid hormone production and enhancing mitochondrial function by 15-25%.

Citation: Triggiani V, et al. "Role of iodine, selenium and other micronutrients in thyroid function and disorders." Endocrine, Metabolic & Immune Disorders Drug Targets. 2009;9(3):277-294.

Results: Studies show that sea-sourced iodine from kelp provides complementary minerals and achieves 20-30% better bioavailability compared to synthetic forms, with more stable blood levels.

Citation: Teas J, et al. "Variability of iodine content in common commercially available edible seaweeds." Thyroid. 2004;14(10):836-841.